First I was able to open DW and to to connect to BC via the extension panel. I uploaded my website to BC as a trail site and then the problems startet. DW would crash with almost any step I took.

At least I was able to open DW again. But from the moment on, that I clicked "stay logged in" in the BC-Panel, DW crashes from the moment on, when "initializing" BC. That means, I just can´t use DW anymore, because the programme crashes before even opening.